Burn assisted fracturing of underground coal bed

Details Burn assisted fracturing of underground coal bed Burn assisted fracturing of underground coal bed

E - Fixed Constructions

21

B

E21B 43/247 (2006.01) E21B 43/00 (2006.01) E21C 37/16 (2006.01) E21C 41/18 (2006.01)

Patent

CA 2476827

A method for fracturing subterranean coal formations by injecting air into the formation, igniting the coal, driving the fire away from the wellbore by injecting a cooling media into the burning formation adjacent the wellbore, and subsequently extinguishing the fire. The method allows fractionation and fracture erosion of subterranean coal formations and offers the benefit of increasing production of clean gas from the coal formation.

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